英音听力讲解:特朗普推特发文称美国需扩张核能

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短语讲解：
1. The president-elect said in a tweet that the arsenal must be built up as he put it until the world comes to its senses regarding nukes.

build up 逐步建立; 增进
例句：The regime built up the largest army in Africa
该政权逐渐建立起一支非洲规模最大的军队。

2. The search for Amri is continuing.

search for 搜索，搜寻; 访求
例句：The search for my brother widened
对我弟弟的搜索范围扩大了。

3. Investigations into corrupt practices admitted by Brazil’s biggest construction company Odebrech, are being opened in a number of Latin American countries.

a number of 一些; 许多的
例句：They found a number of simple expediencies to dissolve the contract.
他们找出了许多解除合同的简便方法。